Yeah there is no way of avoiding regency.
I used a company called Rory Thompson Eng he carried out all the mods along with a full Engineers report for $1,100 he is in SA . All you need to do then is make the car as standard as possible , suspension needs to be non adjustable and factory height, nice quiet pee shooter exhaust, wheels no bigger than 17" and not to wide.
Unless your lucky enough to find standard Cefiro suspenion , all I did is buy r32 spings and shocks for the rear and 180sx front struts with a 20mm spacer in between the strut and the body of the car for the front, along with some standard wheels.
Borrow a atmo exhaust it will bolt straight up to a turbo Ceffy.
Make sure you have no oil leaks, rust and make sure the chassis rails are straight with no major dents.
Frist time I went through I failed because the ride height was 10mm to low at the front, so I fitted the 20mm spacers.
At regency it all depends on the inspector you get on the day, I had a complete asshole the frist time , second time no worries.
Just try to suck up their ass and you should be fine.
